If your customers prefer to raise requests from their email, Jira Service Management can automatically receive those requests within your service project starting with just a few clicks.

Emailed requests are added to your Jira Service Management queues, so teams focus on customers without worrying about missing requests or monitoring multiple inboxes.

Read more in documentation: https://confluence.atlassian.com/servicemanagementserver/receiving-requests-by-email-939926303.html